Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.1.38' (ECDSA) to the list of known hosts. 2021/05/04 04:55:05 fuzzer started 2021/05/04 04:55:05 connecting to host at 10.128.0.169:46385 2021/05/04 04:55:05 checking machine... 2021/05/04 04:55:05 checking revisions... 2021/05/04 04:55:05 testing simple program... syzkaller login: [ 75.974261][ T8434] chnl_net:caif_netlink_parms(): no params data found [ 76.028613][ T8434] bridge0: port 1(bridge_slave_0) entered blocking state [ 76.036312][ T8434] bridge0: port 1(bridge_slave_0) entered disabled state [ 76.044466][ T8434] device bridge_slave_0 entered promiscuous mode [ 76.055879][ T8434] bridge0: port 2(bridge_slave_1) entered blocking state [ 76.063295][ T8434] bridge0: port 2(bridge_slave_1) entered disabled state [ 76.071548][ T8434] device bridge_slave_1 entered promiscuous mode [ 76.092507][ T8434] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 76.104269][ T8434] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 76.128178][ T8434] team0: Port device team_slave_0 added [ 76.135615][ T8434] team0: Port device team_slave_1 added [ 76.153425][ T8434] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 76.160549][ T8434] batman_adv: batadv0: The MTU of interface batadv_slave_0 is too small (1500) to handle the transport of batman-adv packets. Packets going over this interface will be fragmented on layer2 which could impact the performance. Setting the MTU to 1560 would solve the problem. [ 76.186539][ T8434] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 76.199716][ T8434] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 76.208797][ T8434] batman_adv: batadv0: The MTU of interface batadv_slave_1 is too small (1500) to handle the transport of batman-adv packets. Packets going over this interface will be fragmented on layer2 which could impact the performance. Setting the MTU to 1560 would solve the problem. [ 76.235119][ T8434] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 76.262796][ T8434] device hsr_slave_0 entered promiscuous mode [ 76.269966][ T8434] device hsr_slave_1 entered promiscuous mode [ 76.373934][ T8434] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 76.385156][ T8434] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 76.395857][ T8434] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 76.410543][ T8434] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 76.436143][ T8434] bridge0: port 2(bridge_slave_1) entered blocking state [ 76.443410][ T8434] bridge0: port 2(bridge_slave_1) entered forwarding state [ 76.451491][ T8434] bridge0: port 1(bridge_slave_0) entered blocking state [ 76.458896][ T8434] bridge0: port 1(bridge_slave_0) entered forwarding state [ 76.508487][ T8434] 8021q: adding VLAN 0 to HW filter on device bond0 [ 76.522598][ T4839] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 76.535913][ T4839] bridge0: port 1(bridge_slave_0) entered disabled state [ 76.545871][ T4839] bridge0: port 2(bridge_slave_1) entered disabled state [ 76.555492][ T4839] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 76.569774][ T8434] 8021q: adding VLAN 0 to HW filter on device team0 [ 76.581883][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 76.592555][ T7] bridge0: port 1(bridge_slave_0) entered blocking state [ 76.599785][ T7] bridge0: port 1(bridge_slave_0) entered forwarding state [ 76.611980][ T4839] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 76.621590][ T4839] bridge0: port 2(bridge_slave_1) entered blocking state [ 76.628855][ T4839] bridge0: port 2(bridge_slave_1) entered forwarding state [ 76.658587][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 76.667929][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 76.676894][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 76.689324][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 76.698394][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 76.710695][ T8434] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 76.730003][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 76.738525][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 76.752892][ T8434] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 76.772671][ T27] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 76.793711][ T27] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 76.803150][ T27] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 76.811820][ T27] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 76.823805][ T8434] device veth0_vlan entered promiscuous mode [ 76.838152][ T8434] device veth1_vlan entered promiscuous mode [ 76.862191][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 76.870931][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 76.879636][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 76.891692][ T8434] device veth0_macvtap entered promiscuous mode [ 76.902901][ T8434] device veth1_macvtap entered promiscuous mode [ 76.922964][ T8434] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 76.932588][ T27] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 76.943072][ T27] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 76.957025][ T8434] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 76.964956][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 76.975251][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 76.989020][ T8434] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 76.998147][ T8434] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 77.009055][ T8434] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 77.019400][ T8434] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 77.110005][ T205] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 77.136049][ T205] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 77.146317][ T20] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 77.187683][ T139] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 77.195740][ T139] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 77.211737][ T20] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready executing program 2021/05/04 04:55:08 building call list... [ 77.929552][ T139] ------------[ cut here ]------------ [ 77.935504][ T139] hook not found, pf 3 num 0 [ 77.938330][ T139] WARNING: CPU: 1 PID: 139 at net/netfilter/core.c:480 __nf_unregister_net_hook+0x1eb/0x610 [ 77.957133][ T139] Modules linked in: [ 77.961856][ T139] CPU: 1 PID: 139 Comm: kworker/u4:3 Not tainted 5.12.0-syzkaller #0 [ 77.974287][ T139] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 77.987827][ T139] Workqueue: netns cleanup_net [ 77.992650][ T139] RIP: 0010:__nf_unregister_net_hook+0x1eb/0x610 [ 78.000420][ T139] Code: 0f b6 14 02 48 89 c8 83 e0 07 83 c0 03 38 d0 7c 08 84 d2 0f 85 11 04 00 00 8b 53 1c 89 ee 48 c7 c7 c0 78 6d 8a e8 90 4a 8a 01 <0f> 0b e9 e5 00 00 00 e8 a9 46 30 fa 44 8b 3c 24 4c 89 f8 48 c1 e0 [ 78.023813][ T139] RSP: 0018:ffffc9000142fbc0 EFLAGS: 00010286 [ 78.031433][ T139] RAX: 0000000000000000 RBX: ffff888021a34100 RCX: 0000000000000000 [ 78.041930][ T139] RDX: ffff8880125dd4c0 RSI: ffffffff815c8ba5 RDI: fffff52000285f6a [ 78.054238][ T139] RBP: 0000000000000003 R08: 0000000000000000 R09: 0000000000000000 [ 78.064786][ T139] R10: ffffffff815c2a0e R11: 0000000000000000 R12: ffff888028a10f20 [ 78.075457][ T139] R13: 0000000000000000 R14: ffff888013892900 R15: 0000000000000001 [ 78.086624][ T139] FS: 0000000000000000(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000 [ 78.095778][ T139] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 78.104279][ T139] CR2: 00007f590803a038 CR3: 000000001334b000 CR4: 00000000001506e0 [ 78.114977][ T139] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 78.124461][ T139] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 78.146493][ T139] Call Trace: [ 78.149845][ T139] nf_unregister_net_hooks+0x117/0x160 [ 78.155344][ T139] arpt_unregister_table_pre_exit+0x67/0x80 [ 78.164900][ T139] ? arptable_filter_net_exit+0x20/0x20 [ 78.171671][ T139] cleanup_net+0x451/0xb10 [ 78.178805][ T139] ? ops_free_list.part.0+0x3d0/0x3d0 [ 78.185081][ T139] process_one_work+0x98d/0x1600 [ 78.192100][ T139] ? pwq_dec_nr_in_flight+0x320/0x320 [ 78.201204][ T139] ? rwlock_bug.part.0+0x90/0x90 [ 78.208209][ T139] ? _raw_spin_lock_irq+0x41/0x50 [ 78.213391][ T139] worker_thread+0x64c/0x1120 [ 78.221007][ T139] ? process_one_work+0x1600/0x1600 [ 78.227402][ T139] kthread+0x3b1/0x4a0 [ 78.231541][ T139] ? __kthread_bind_mask+0xc0/0xc0 [ 78.239824][ T139] ret_from_fork+0x1f/0x30 [ 78.244306][ T139] Kernel panic - not syncing: panic_on_warn set ... [ 78.250980][ T139] CPU: 1 PID: 139 Comm: kworker/u4:3 Not tainted 5.12.0-syzkaller #0 [ 78.259064][ T139] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 78.269219][ T139] Workqueue: netns cleanup_net [ 78.274090][ T139] Call Trace: [ 78.277554][ T139] dump_stack+0x141/0x1d7 [ 78.281905][ T139] panic+0x306/0x73d [ 78.285821][ T139] ? __warn_printk+0xf3/0xf3 [ 78.290443][ T139] ? __warn.cold+0x1a/0x44 [ 78.294886][ T139] ? __nf_unregister_net_hook+0x1eb/0x610 [ 78.300615][ T139] __warn.cold+0x35/0x44 [ 78.304859][ T139] ? __nf_unregister_net_hook+0x1eb/0x610 [ 78.310583][ T139] report_bug+0x1bd/0x210 [ 78.314912][ T139] handle_bug+0x3c/0x60 [ 78.319107][ T139] exc_invalid_op+0x14/0x40 [ 78.323609][ T139] asm_exc_invalid_op+0x12/0x20 [ 78.328457][ T139] RIP: 0010:__nf_unregister_net_hook+0x1eb/0x610 [ 78.335250][ T139] Code: 0f b6 14 02 48 89 c8 83 e0 07 83 c0 03 38 d0 7c 08 84 d2 0f 85 11 04 00 00 8b 53 1c 89 ee 48 c7 c7 c0 78 6d 8a e8 90 4a 8a 01 <0f> 0b e9 e5 00 00 00 e8 a9 46 30 fa 44 8b 3c 24 4c 89 f8 48 c1 e0 [ 78.355228][ T139] RSP: 0018:ffffc9000142fbc0 EFLAGS: 00010286 [ 78.361302][ T139] RAX: 0000000000000000 RBX: ffff888021a34100 RCX: 0000000000000000 [ 78.369275][ T139] RDX: ffff8880125dd4c0 RSI: ffffffff815c8ba5 RDI: fffff52000285f6a [ 78.377335][ T139] RBP: 0000000000000003 R08: 0000000000000000 R09: 0000000000000000 [ 78.385389][ T139] R10: ffffffff815c2a0e R11: 0000000000000000 R12: ffff888028a10f20 [ 78.393748][ T139] R13: 0000000000000000 R14: ffff888013892900 R15: 0000000000000001 [ 78.401824][ T139] ? wake_up_klogd.part.0+0x8e/0xd0 [ 78.407039][ T139] ? vprintk+0x95/0x260 [ 78.411200][ T139] nf_unregister_net_hooks+0x117/0x160 [ 78.416673][ T139] arpt_unregister_table_pre_exit+0x67/0x80 [ 78.422655][ T139] ? arptable_filter_net_exit+0x20/0x20 [ 78.428216][ T139] cleanup_net+0x451/0xb10 [ 78.432731][ T139] ? ops_free_list.part.0+0x3d0/0x3d0 [ 78.438110][ T139] process_one_work+0x98d/0x1600 [ 78.443069][ T139] ? pwq_dec_nr_in_flight+0x320/0x320 [ 78.448466][ T139] ? rwlock_bug.part.0+0x90/0x90 [ 78.453496][ T139] ? _raw_spin_lock_irq+0x41/0x50 [ 78.458548][ T139] worker_thread+0x64c/0x1120 [ 78.463258][ T139] ? process_one_work+0x1600/0x1600 [ 78.468466][ T139] kthread+0x3b1/0x4a0 [ 78.472546][ T139] ? __kthread_bind_mask+0xc0/0xc0 [ 78.477768][ T139] ret_from_fork+0x1f/0x30 [ 78.483339][ T139] Kernel Offset: disabled [ 78.487775][ T139] Rebooting in 86400 seconds..